Our Team
Peter Tsai, MD
Dr. Peter Tsai is a board-certified Orthopaedic Hand Surgeon and a respected expert on nerve entrapment syndromes such as carpal tunnel syndrome, cubital tunnel syndrome, trigger fingers, fractures, elbow pain, and other issues. After graduating magna cum laude from Brown University, Dr. Tsai attended medical school at New York University and pursued his residency at one of the top ten orthopedic hospitals in the country, the New York University Hospital for Joint Diseases. To hone his hand and upper-extremity surgery skills, Dr. Tsai completed a fellowship at the University of Pennsylvania. Though many hand and arm issues are managed nonoperatively, Dr. Tsai’s surgical experience and training coupled with his commitment to patient care optimizes the operative result. After founding Upper Hand Orthopaedics in 2012, Dr. Tsai also co-founded Waverly Lake Surgery Center, a free-standing ambulatory surgery center to deal with patients’ needs in an efficient, skilled way. He is excited to work with you in order to achieve the best possible outcome.
In his free time, Dr. Tsai enjoys spending time with his family and playing tennis. He is the head coach of the Crescent Valley High School tennis team, who recently placed second in state in the 2023 season. Go Raiders!
Emily Mulcahy, PA-C
Emily Mulcahy is a trained professional Physician Assistant with more than ten years of experience dealing with orthopaedic injuries. She has worked alongside Dr. Tsai for over a decade. She received her undergraduate degree from Western Washington University in biochemistry and her medical credentials from Shenandoah University in Virginia.
Therapists
Greg Thielen, OTR/L, CHT
Greg received his BS in Occupational Therapy from Pacific University in 1986 and also a BS from Oregon State University. He has been a Certified Hand Therapist for over two decades, working both in clinical and management positions. He lives in Corvallis with his wife and is a proud father of three daughters. During his free time, he enjoys going to the coast, fly fishing, and woodworking.
Janet Azzarello Bauer, MS, OTR/L
Janet was born and raised in Michigan. She spent 15 years working in a variety of rehab and skilled nursing settings in Chicago. Janet has over 20 years of experience in upper extremity therapy, which focuses on the rehabilitation of fractures, amputations, tendon and nerve injuries, cumulative trauma, and splinting. Janet is married with three children and is active in school-related committees in the community. She enjoys cooking, sewing, gardening, and outdoor activities such as biking and skiing.
Kathleen Adams, PT, CHT
A Corvallis native, Kathleen has worked with upper extremity injuries for over 25 years. She has been a Certified Hand Therapist since 2004. In her free time, Kathleen enjoys exercising, reading, baking and spending time with her husband and three grown children.